Open-window fastener



Nov. 16 1926. 1,606,907

E. K. STEVIE OPEN WINDOW FASTENER Filed Jan. 23.- 192s Patented Nov. 16, 1926.

, PATENT orrlca- UNITED STATES sum-x. srnvm, or nnn'vnn, cdnomo.

OPEN-WINDOW rasrnnnn.

Application fl led January 28, 1928. Serial No, 88,284.

dow; and thetop sashorpart of a window 1 cannot be lowered from the outside of the window, but that will permit anyone on the inside of the window to either raisethe lower sash or lower the upper sash whenever it is desired to do so, and that will still .15 leave the two lsashes automatically locked together against movement from the outside of the window wherever the inside'raising or lowering movement stops. 4

Second: To provide an open-window fastener that prevents the opening of either the lower and the upper sashes of a window from the outside, but allows the inmates of a home on the inside of the window to raise the lower sash whenever desired, if it has been locked at any part of. its opening height,.and at the same time'if the upper sash has been locked in an open position to artially orwholly close the upper sash, the ock acting to automaticall lock the two sashes together the instant t e movement of either one of the sash stops.

Third: To provide an open-window fastener that is reliable in action, simple in construction, and that can be manufactured and sold for a few cents each, and can be secured to the sash rails in .a few minutes without cutting or otherwise injuring the said rails, and that will allow the occupants of a home to look their windows in such nar-' row open positions as will admit fresh air to the rooms without permitting them to be opened wide enough from the out'slde for a burglar to enter a room through them.

- I attain these objects by the mechanism illustrated in the accompanying drawings in which:

Fig. 1', is a sectional view-full size-through the upper anddower rails of the lower and upper sashes, respectively of a window,

showing the application of the improved fastener. Q Fig. 2, is a top view of the fastenerde- Fi detached, and

Fig. 4, is a plan view of the blank from which the casing is made.

3, is a sideview of the fastener bar- Similar letters of reference refer to similar parts throughout the several views.

Referring to the drawings the numeral 1, desi nates the casing member of an openwin ow lock embodying my invention, and t has astraight bottom edge from which pro ect two thin flat feet lugs 3, from the opposlte side plates 4, of the casing 1, and they are level with the bottom .edge of the casing and consequently restv down on top of the upper surface of the upper cross rail 5, of the lower sash to which they are secured by screws 6, that are extended through holes 7 formed in the lugs and are screwed into the rail 5 of the lower sash in a position to allow the rubber clamping block 8, of a lock bar 8 to bear a ainst the inside surface of the adjacent sti e or vertical sash rail 9, of the upper sash tight enough to hold it against an downward movement of the upper sas when it is operatively set on the lower sash to pro rly engage 1t, as will be fully explaine hereinafter.

The casing member 1, consists of two in dependent side lates that are cut out of a sheet of iron or rass or other metal and the feet lugs 3, are preferably an integral part of each side plate of the casing 1 and the two side plates 4, of the casin are oined together into the form. of a ho low casing by an integral neck portion that is also pro-.

vided with narrow extensions 10 i and 10* that fit betweenthe side plates 4, flush with their upper and lower edges for a portion of their lengths from the narrow end of the casing 1, and which define the width a -art of the side plates 4 and consequently o the hollow s ace inside of the casing, that is,

- between its side plates 4. This casing is of a triangular shape, and its longest side 11 rests on the top cross rail 5 of the lower sash and its narrowest end "12Iis its rear end, while its front end 13 is curved in an are which isstruck from a point near the lower rear corner of the casing. A curved slot 16 is formed through each of the side plates 4 from this same center, that are in ali ent with each other and at the top of t e slots there is a recess 17 extending towards the.

radial center far enough to allow a lock pin across the casing to rest in when it is moved to the top of the curved slots and to one side of them into these recesses 17.

It can be seen that this casing can be stamped out of thin metal and then bent up into the form of the hollow casing shown. 7 I Within the casing and abutting at one end in the lower corner is placed the lock bar 8f which swings freely up and down in the casing and extends beyond the curved front end 13 a short distance. Thislock bar 8 is provided with a head member 20 that extendsiacioss' the bar on each side of it a short distance and it is provided with a dove-. tailed recess 21, in which the rubber block 8 is tightly fitted.

A vertically positioned slot 23 is formed in the lock bar and its upper end 24ris p0 sitioned to aline with the upper portion of the curved slots onthe side plates of the casing, but .the slot in the lock bar is disposed at such an outward angle which is tangent to the slots 16 in the side plates, so that its lower portion slightly crosses the lower portion of the curved slots 16 in the casing, and when the cross pin 18, which extends just far enough beyond the opposite sides of the casing toreceive a round headed finger grasping washer 25 on each end, as it is raised in the curved slots 16, it engages thetop of the slot 23in the lock bar 8", and'raises the bar with it, and as the upper ends of the two slots are in alignment slots 16, t e pin can be moved into the rec'ess 17 of the curyed slot and also into a similar reams 27 formed in the top of the slot in the lock bar made-to receive the pin and when the pin isinthe recessof both slots the lock bar is held against accidental displacement and its rubber block is out of the path of engagement with the vertical side rail of the upper sash 9, but when the cross pin 18 is moved out of the recesses of the curved slots the lock bar drops down into engagement with-the vertical side rail 9 of 1 angle of about 10 degreesto the vertical the upper sash rail and the pin is pressed down to force "the rubber block tightly against the vertical side rail and inasmuch as the slot in the lock bar is of a difl'erent angle being preferably at an angle of about 7 12 degrees to the vertical 'and the head end of'the lock bar is at its rear side at an in tightly locks the lock bar and its rubber lock ainst upward movement.

ownward pressure on the upper sash to lower it, tightens the locking pressure of the rubber block of the lock bar a ainst it, by jamming the rear end of the loc bar against the corner of the .casmg and also any lifting pressure applied to the lower the,

quently both sashes are locked against any opening movement of either one from the outside of the window, but the lower sash can be lowered as much as desired if it is found to be locked in an open position that admits too much air into the room and the upper sash can also be raised without touching the locking pin 18, but if it is desired to raise the lower sash or'to lower the upper sash, the opposite ends of the locking pms will have to be engaged by the thumb and a finger of a person on the inside of the window and moved up inthe curved slots'16 of the casing which movement of the pin unlocks the lock bar and allows it to be moved upward with the upward movement of the pin and away from the vertical mem. ber of the upper sash which is then released from the rubber block of the lock bar and the lower sash is also released at the same time and if the pin is moved into the recesses 17, the lock is held in an inoperative position. A

The locking pin 18 serves to lock the bar against unauthorized upward movement, so that if a person on the outside of the window should attempt to raise the lock bar, by

movement of the lock bar, which would therefore,'remain in a sash locking position. when the in .18.is at the top of the curved Y claim as new and desire to secure by Letters Patent is:

1. In a fastener for window sashes,a casing adapted to be secured upon the top of the upper rail of the lower sash, an inclined lock bar in said casing, one end of which. bears in the 1ower corner of the casing, its opposite endengaging the stile of the upper sash, whereby an attempted opening movement of either sash jams said lock her between said stile and the casing thereby looking said sashes against open movement, the sides of said casing having opposite slots in an arc of the swinging movement of the lock bar, and the lock bar havin a slot which registers at its upper end with the slots in the casing'but is tangent vto the arc of said vided with a resilient 'bearin slots, and a pinextending through said slots which prevents unintentional lifting movement of the lock bar. I

2. In a fastener for window sashes, a narrow casing, one end of which is open and curved in an arc whose center is the opposite lower corner oflthe casing, a lock bar, one end of which bears in the said lower corner of the casing its opposite end extendingout through the open end of said casing and problock, the sides of the casing being provi ed with opposing slots concentric with the curved open end of'the casing and terminating at their upper ends in oifsetjnotches, said lock bar also having a slot terminating at its upper end'in an offset notchada ted to register with the corresponding notc es in the casing slots when the lock bar is raisedsaid latter slot extending down in a direction ,slightly' tangent to the slots inthe casing, and a pin which extends through said s adapted to prevent unintentional upward movement of said lock bar, and to be moved to lie in said notches to hold said lock bar in an inoperative position said casing being adapted to be secured to the upper rail of a lower window sash and said lock bar being adapted to bear against the stile of the upper sash. i 3. In a faitener for window sashes, an abutment on he upper'rail of the lower sash,

a lock bar, onefgend of which bears against said abutment, from which point ithas an upward inclination and engages the stile of the upper sash, whereby an attempted opening movement of either sash, will jam said lock bar between the stile and the abutment thereby locking the sashes against open movement, andmeans for prevent' an unauthorized lifting of the lock bar out of stile engaging position. K

i. In a fastener for window sashes, the combination of a narrow casing open on one end,the opposite lower corner of said casing forming an abutment, a swinging lock bar in said casing one end of which bears in said corner, its opposite end extending out through the open end of said casing, the sides of said casinghaving opposing slots in an arc of the swinging movement of the lock bar, said-lock bar having a slot which crosses ots and is the arc of the slots in the casin and a pin extending through said' slots, said pin being bound between one edge of the lock bar slot and the opposite edges. of the casing slots when an upward pull 1s exerted-upon said lock bar, thereby preventing upward movement of said lock bar, said bar being free to u ward movement when said pin is manua ly moved upward in said slots.

' 5. A fastener for locking both the lower and the upper sashes of windows in open p sitions, in such a manner that they cannot be opened from the outside, which consists of a. hollow casing arranged to be secured to thetop rail of the lower sash of t e lower window; a lockbar hearing at one end in the lower corner of said casing and extending beyond said casing and. arranged to engage the stile of .the upper 'sash'and havin its outer end provided with a rubber b ock, slots'being formed in said lockbar and'said casing registering at their upper ends and crossing each other atitheir lower ends and a finger operated pin extending through sai slots'for locking said lock bar against umntentional upward. movement said lock bar preventing either the upper or lower sash from being opened wider than a desired space.

6. In an open window fastener, the combination of a hollow cas' adapted to be fastened to the upper sd s l rail of the lower sash of a window; a lock bar which abuts at one end against the lower corner ofsaid casing, arranged to swing down into engagementwith the stile of the upper sash rear-.

wardly curved slots being formed in the op-' posite sides of said casing and a straight slot in said lock bar the upper end of which is adapted to register with the curved slots in said casing and partially crossing tangentially the lower end of said curved slots in said casing; a finger pin extending slidably through the slotsin said casing and said lock bar; and notches in the upper ends of said slots to receive said pin thereby to lock said lockbar to said casing in a position of disengagement with the stile of'the upper sash of said window. v

In testimony whereof I afiix my signature.

EMIL K. STEVIE. 

